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Question : Your car gets 24 miles per gallon (mpg) at 60

Your car gets 24 miles per gallon (mpg) at 60 miles per hour (mph) and 20 mpg at 70 mph. At what speed should you make a 500-mile trip: (a) If gas costs $3 per gallon and your time is worth $18/hr? (b) If gas costs $4 per gallon and your time is worth $12/hr? (c) If gas costs $5 per gallon and your time is worth $9/hr? (d) Build a spreadsheet (sec Appendix A) to calculate the total trip cost for gas costs of $2, $3, $4, and $5 and values of time of $6, $9, $12, $15, and $ 18 per hour. Do two tables: one at 60 mph and one at 70 mph.